I get embarassed and thank them or kind of like what Meat Puppet said, I'll tell them thanks, but that they're wrong because I'm not pretty/nice/smart/whatever. I don't know. I like being complimented like most people do, but sometimes I just don't like it because I feel like if they think that I'm nice/pretty/smart/whatever and I don't agree, I feel like I'm almost... deceiving them, and that it'll whip back at me and they'll say "Hey, you fooled me, you're not nice/pretty/smart/whatever!" Kind of weird.